Torch



June 7, 1938. H. scHRADER TORCH Filed April 10, 1936 Henry. Scfzr'ader YINVENTOR.

BY @dwz/c HIS ATTORNEY.

Patented June 7, 1.938

UNITED STATES PATENTY OFFICE TORCH Henry Schrader, Chicago, Ill.

Application April 10, 1936, Serial No. 73,661

3 claims. (Grits- 32) A Projecting into the lower end of the blow tubeThis invention relates to certain novel improvements in torches, and hasfor its principal object the provision of an improved structure of thischaracter 'which will be highly eiiicient in use and economical inmanufacture.

Among the several objects of the invention is to provide a torch, of thecharacter more fully hereinafter described and claimed, which willproject a name of steady, uniform and intense heat, and which may beused for sundry purposes.

Another object of the invention is the provision of'a torch of thecharacter hereinafter described and claimed wherein a pilot or startingburner is utilized to vaporize the fuel within the l torch to create avapor pressure which when released causes a continuous and forced flowof vaporillellip a burner tip located centrally within a blow tubecentrally located within the fuel tank, and which blow tube when heatedwill upon extinction of the pilot burner vaporize the fuel and cause acontinuous and uninterrupted fuel supply to the burner tip to the extentof producing a fuel flow of steady, uniform and intense heat.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partsto be hereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawing showing the preferred form of construction, and inwhich:

Fig. l is a vertical cross-sectional detail View of the invention;

Fig. 2 is a sectional detail view of reduced size of the same takensubstantially on line 2-2 of Fig. 1;

Fig. 3 is a top plan view of the invention; and

Fig. 4 is a bottom plan view of the same.

Many different forms of construction may be utilized to accomplish theseveral objects of the invention. I, therefore, have illustrated in thedrawing the preferred form of construction, and in which drawing a torchis indicated at ID. This torch I comprises a fuel tank I I, one wall ofwhich is provided with an opening I2. On the tank II is a suitablehandle I3 facilitating manipulation of the torch in use. y

The bottom. wall of the tank is indicated at I4, and preferably, thoughnot necessarily, formed as an integral part thereof is a blow tube I5including a nozzle end I6 angled to project through the opening I2. Theblow tube I5 is preferably located centrally within the tank so as toprovide an unobstructed passage for heat through the center of the tankthrough the tube I5.

l''is a burner tip Il having connection with a supply pipe I 8 connectedas at I9 to a branch supply pipe 20. This branch supply pipe 2li`extends upwardly through a tube 2l within the tank I I, as shown. 'Iheupper end of the pipe 20 isuconnected, as at 22, to a valve 23 includinga -valve head and seat 24 and 25, respectively, and a handle 26. Ifdesired the tip part Il may be omitted and the end of the pipe sectioni8 may be constricted or dimensioned to provide th burner.v

Fuel is admitted to the tank II through an opening 2l normally closed bymeans of a removable plug 23. The base of the tank is in the form of anoutwardly flaring skirt 29 having a series of air ports 30 formedtherein.

To complete the invention, I provide a starting burner 3l having aplurality of resilient fingers 32 engageable in the lower end portion ofthe blow tube I5 for supporting the burner 3l in position.

To operate the torch, a starting fuel is deposited in the burner 3I andignited. The flame therefrom upon passing upwardly through the blow tubeI5, heats the same and vaporizes the fuel within the tank. As the fuelin the tank vaporizes, a pressure is created causing the vaporized fuelunder forced pressure to escape through the pipe 20, I8, upon opening ofthe valve 23. The vaporized fuel under pressure will pass to the burnertip Il, and upon exiting therefrom will be ignited by the ame from thepilot or starting burner 3I.

The ignited fuel escaping from the burner tip under pressure and theheat therefrom will create an upward draft through the blow tube, andthis forces and spreads the fuel upwardly through the nozzle I6 insteady and uniform flow and intense heat.

The several parts of the invention will be so constructed and connectedtogether in a manner such as will assure safety.

The torch when once started acts with regularity free of risk ofexplosion, and with a single flame without any secondary source of heat.The torch will operate in any position, whether upright, inclined,horizontal or even inverted. n

The burner constructed in accordance with the ldisclosures herein isextremely efficient and is applicable to all of the uses to which the'ordinary blow torch is applied. The emciency of

